1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120
|
=== tests/cases/conformance/expressions/assignmentOperator/assignmentTypeNarrowing.ts ===
let x: string | number | boolean | RegExp;
>x : string | number | boolean | RegExp
x = "";
>x = "" : ""
>x : string | number | boolean | RegExp
>"" : ""
x; // string
>x : string
[x] = [true];
>[x] = [true] : [true]
>[x] : [string | number | boolean | RegExp]
>x : string | number | boolean | RegExp
>[true] : [true]
>true : true
x; // boolean
>x : true
[x = ""] = [1];
>[x = ""] = [1] : [number]
>[x = ""] : [string]
>x = "" : ""
>x : string | number | boolean | RegExp
>"" : ""
>[1] : [number]
>1 : 1
x; // string | number
>x : string | number
({x} = {x: true});
>({x} = {x: true}) : { x: true; }
>{x} = {x: true} : { x: true; }
>{x} : { x: string | number | boolean | RegExp; }
>x : string | number | boolean | RegExp
>{x: true} : { x: true; }
>x : true
>true : true
x; // boolean
>x : true
({y: x} = {y: 1});
>({y: x} = {y: 1}) : { y: number; }
>{y: x} = {y: 1} : { y: number; }
>{y: x} : { y: string | number | boolean | RegExp; }
>y : string | number | boolean | RegExp
>x : string | number | boolean | RegExp
>{y: 1} : { y: number; }
>y : number
>1 : 1
x; // number
>x : number
({x = ""} = {x: true});
>({x = ""} = {x: true}) : { x?: true; }
>{x = ""} = {x: true} : { x?: true; }
>{x = ""} : { x?: string | number | boolean | RegExp; }
>x : string | number | boolean | RegExp
>"" : ""
>{x: true} : { x?: true; }
>x : true
>true : true
x; // string | boolean
>x : string | true
({y: x = /a/} = {y: 1});
>({y: x = /a/} = {y: 1}) : { y?: number; }
>{y: x = /a/} = {y: 1} : { y?: number; }
>{y: x = /a/} : { y?: RegExp; }
>y : RegExp
>x = /a/ : RegExp
>x : string | number | boolean | RegExp
>/a/ : RegExp
>{y: 1} : { y?: number; }
>y : number
>1 : 1
x; // number | RegExp
>x : number | RegExp
let a: string[];
>a : string[]
for (x of a) {
>x : string | number | boolean | RegExp
>a : string[]
x; // string
>x : string
}
// Repro from #26405
type AOrArrA<T> = T | T[];
>AOrArrA : AOrArrA<T>
const arr: AOrArrA<{x?: "ok"}> = [{ x: "ok" }]; // weak type
>arr : AOrArrA<{ x?: "ok"; }>
>x : "ok"
>[{ x: "ok" }] : { x: "ok"; }[]
>{ x: "ok" } : { x: "ok"; }
>x : "ok"
>"ok" : "ok"
arr.push({ x: "ok" });
>arr.push({ x: "ok" }) : number
>arr.push : (...items: { x?: "ok"; }[]) => number
>arr : { x?: "ok"; }[]
>push : (...items: { x?: "ok"; }[]) => number
>{ x: "ok" } : { x: "ok"; }
>x : "ok"
>"ok" : "ok"
|